Gsease-gttit



I. OWENS.

GREASE GUN.

APPLICATION HLED JULY 1:. 19l9.

Patented May 24, 1921.

5144mm @7270 MIZ'S 91% winesses JOHN OWENS, OF KINGSTON, IOWA.

unease-Gun.

Specification of Letters Patent. Patented play 24, 1921 Application filed July 11, 1919. Serial No. 310,094

portable hand grease guns whose most com- 7 mon function is the feeding- 0t grease lubricant to the transmisslon and differential casings as well as unlversal JOIIItS of automobiles. Grease'guns oi this general type are commonly now in use although frequent trials have clearly demonstrated structural insuiliciencies and operating disadvantages which it 1s the purpose of my present invention to overcome in a structur which is at once simple, strong, durable a id capable of ready and economical manufacture.

The disadvantages just mentioned as well as the particular manner in which my in vention overcomes the same, will be apparent from the following description, reference being made. to the accompanying drawings, forming a part of this specification, and wherein,

Figure 1 is a longitudinal section through my improved grease gun,

Fig. 2 is a rear endelevation,

Fig. 3 is a detail perspective of the plunger removed, and

Fig. 4 is a detail side view of the intermediate'portion of the barrel.

Referring now to these figures a grease gun whose barrel is in two parts 10 and 11, the part 10 being the major part and preferably formed by successive drawing operations from a single piece of metal, with an offset annular flange 12 at'vits open end and a discharge fitting or nipple 13'secured centrally injts opposite or closed end. This part of the grease gun being free of projections is by reason' of this construction adapted to be easily cleansed of grease adhering to its exterior. Furthermore there being no surplus metal or projections on the grease can be inserted into contracted spaces to supply the case where required. This discharge fitting-1 3 is preferably internallyv threaded at itsouter portion for the reception of a discharge tube 14 of any desired I propose gun it is light and portable and form which may have a detachable nozzle 15 for interchangeable urposes. The other part 11 of the barrel is arranged to telescope at itsopen end within the flanged open end 12 of the part 10 and is oisubstantially less depth than the part 10 and in fact of a depth just equalto the depth of the plunger 16 over all. At its other end the part 11 of the barrel has a central internally threaded bearing member 17 through which the axial plungerscrew 18 works, this plunger screw having at its external end a reduced flattened portion 19 extending through the elongated slot 20 of a transverse crank arm 21 having an angular crank pin 22 at one end, sothat the said crank arm may be shifted inwardly and outwardly with respect to the axis of the barrel.

Atits inner end the plunger screw 18 has a revoluble connection at 23 with the rear circular plate 2 of the plunger 16 whose front plate 25 spaced from therear, plate 24, by spaced arcuate wall sections 26 supports a leather 27 by means of a leather holding disk 28 and bolt 29. l X

It will be noted that the front and rear plates of the plunger 16 are spaced apart a considerable distance in order to give the plunger efi'ective bearing against the inner 'of filling the barrel part 10 with the semi: 'fiuidlubricant tm plunger 16 may be first wholly retradted into the barrel part 11, so that when th'e'two barrel parts are again: associated in proper relation, the plunger may be shifted without difliculty into tin? barrelpart 10 whereas without a uide it is equally obvious it would-be difiicult to t e open'end of the barrel part 10.

"To hold the barrel parts normally in con nected relation the flange 12 of the part 10 has diametrically opposed bayonet slots 30 one of which is plainly to be seen from Fig.

lrlsert the plunger with its 'leatlier 27 into and the barrei 11 has diametrically opposed stir-ls 31 which engage within rho bayonet than the parts thus provide for rondv or (iotz'whnientas; desired.

I claizii 'i. A portable hand grease gun consisting of u bn lei. confining a one-pieco major part iron (f w; adapting ippod, into hard grease to be POI-Niki} L1 oxiorioz-iy and a onepiece hour yum with an opening; through its to and u l on having scrow thread piston 1-. '1 hunilie, thereon for turning the "3118, the minor part of the barrel being suiiioni 1y 1011; to house the piston and bonus" :1 :aiiy connected to the major pa; 1 tho barrel whereby the piston may be broad smoothly from the minor E0 of the barrel by the barrel being suiiivientiy long to house the gist-0n and being telescopiczilh connected to the IX12'\]01 part of the barrel whereby the piston may be forced smoothly from the minor to the major part of the barrel by the screw.

JOHN OWENS. 

